just extracted all the sounds from psx final doom iso. download!http://www.mediafire.com/?e6i98794i6w1b9b
(!!!dsnokey not included!!!)
dssecret shortened to 1/11025 second silence (minimal possible length)

here are your mistakes:
dsposit1 must be dsposit2 =>FIXED in the archive
dsposit2 must be dsposit1 =>FIXED in the archive
cyberdemon must have 2 walk sound states - "metal" hoof and "normal" hoof.
"normal" hoof is played right after "awakening" cyberdemon, but his normal walking must sound as it does now (but reproducted using hoof and hoof2 separately!)
dsmetal - for spider mastermind
DSHOOF and DSHOOF2 - for cyberdemon (in the archive)
(dshoof = normal, dshoof2 = metal hoof)
dsskldth (sounding like dsoof/dsnoway included, just to replace every sound)

"copyrights" graphic has overlapping letters and spelling mistakes ("WILLIAMS(R) IS A REGISTERED TRADRMARK")
Besides, it looks different (hyphens are in different places)
dunno if it's because of pal\ntsc differences, but here's my graphic:
(don't use it in game, it's just reference screenshot)
(actual psx screenshot)

btw, check the edges of the "holes" of the doom intro graphic. some of them are semi-transperent, but there must be only 100% transperent and 100% opaque pixels.

ScottGray,
These ones appear to be correct, though I'm not sure about the shape of the holes (I think that all "edges" must be rounded, not only 2 opposite ones)
Personally, I prefer NTSC over PAL for some reasons but it doesn't really matter now.

Idea: as you remember, PSX Final Doom has separate graphic for the menu background (similar to doom2' interpic, but more "pink") and options' background (tiled image: (cut from emu screenshot)
why don't make this graphic console'background? (must extract it from the psx doom first)

IIRC, this feature was disabled, since it was never really used and it only ever worked on Windows (no support for it in DOS or Linux version back then; no support for it in Linux or MacOS versions now).

That's a cool Idea lafoxxx, I put that into the console background, and am cool with the SCEA logo. The ntsc copyrights are in also.
Iv updated the main download, but here are just the changes, unzip it into the PSXFINALDOOM.pk3http://www.mediafire.com/download.php?mfpa8t10p6po67f

I had no idea zdoom could play video, I wonder if there is a way to enabled it? It says on zdoom wiki that it will just return MOVIE_Failed. It would be cool to have it in there.http://zdoom.org/wiki/PlayMovie

Do you still need psxmus01-20 recorded directly from the emu? Since I don't see any serious reasons for replacing existing ones (from PSX DOOM TC), I'll only be able to record them if you really need them, because it's kinda hard for me to find time for this right now.

Really great work on getting the video imported Scottgray, just checked and lafoxxx is right about the order that it's played but it's not a massive issue, would definitely like to see this imported into both the main downloads.

Out of interest how feasible would it be to as well as include the Williams logo video, to also include the Playstation Bootup video?